Results 151 to 160 of about 777 (200)

Stepwise Expansion Pattern of Surface Streamer Propagation in C4F7N/CO2 Mixture Under Impulse Voltage

IEEE Transactions on Plasma Science
C4F7N/CO2 mixture is one of the most promising environmentally friendly alternatives to SF6 gas. However, the research on the development characteristics of surface discharge for C4F7N/CO2 mixture is still insufficient.
Junhong Chen, Junho Deng, Peng Sun, Wei Yin, Jianben Liu, Yan Liu   +5 more
semanticscholar   +1 more source

Graphite condensation and thermophysical properties of nonequilibrium C4F7N–CO2–O2 arc plasma mixed with PTFE ablation vapour

Journal of Physics D: Applied Physics
The C4F7N–CO2–O2 mixture has emerged as one of the most promising environmentally friendly alternatives to SF6 and is gradually being adopted in high-voltage circuit breakers.
Guanyu Wang, Boya Zhang, Junwei Deng, Minchuan Cao, Guoli Wang, Fusheng Zhou, Xingwen Li   +6 more
semanticscholar   +1 more source

Streamer parameters in CO2/O2/C4F7N gas mixture for application in high voltage switchgear

Journal of Physics D: Applied Physics
Gas mixture with CO2, O2 and 3.5% C4F7N presents one of the most promising alternatives to SF6 in high-voltage sub-transmission and transmission networks.
Kunal Soni, Martin Seeger, Ueli Straumann, Siddharth Kumar   +3 more
semanticscholar   +1 more source

Study on the thermal interaction mechanism between C4F7N-N2 and copper, aluminum

Corrosion Science, 2019
Abstract The thermal interaction mechanism between C4F7N (fluorinated nitrile)-N2 gas mixture using as substitute to SF6 with metal was investigated. We found that interaction between C4F7N-N2 and copper leads to surface corrosion or gas decomposition with interface temperature at 120℃-220℃.
Yi Li, Xiaoxing Zhang, Qi Chen, Ji Zhang, Dachang Chen, Zhaolun Cui, Song Xiao, Ju Tang   +7 more
openaire   +1 more source

Gas-sensing mechanism and sensing properties of (CuO)n-MoTe2 composites for C4F7N decomposition products: a first-principles calculation

Physica Scripta
Decomposition gases (HF, CO, CF4, COF2) generated during partial discharge of the novel eco-friendly insulating gas perfluoroisobutyronitrile (C4F7N) pose a serious threat to the insulation performance of high-voltage insulating equipment, the safety of ...
Sujuan Wang, Tao Shen, Chi Liu, Feifei Sun, Zuxiang Kou, Tianyu Sun, Delong Li   +6 more
semanticscholar   +1 more source

Study on Dispersion of Impulse Discharge in SF6 and Eco-Friendly Insulating Gas C4F7N/CO2

Energies
In recent years, C4F7N/CO2 gas has been widely studied as an eco-friendly alternative to SF6, which is commonly used in electrical equipment. To ensure electrical equipment reliability, the dispersion of impulse discharge voltage of insulated gas is ...
Tianran Zhang, Fang He, Lubin Chang, Wenjun Zhou   +3 more
semanticscholar   +1 more source

Ageing of C4F7N and CO2-based insulating gas mixtures by free-burning arcs

Plasma Physics and Technology
This study examines the effects of arc-induced ageing in CO2/O2 (86.3%/13.7%),C4F7N/CO2/O2 (5%/82%/13%) and C4F7N/CO2 (5%/95%) mixtures at 5 bar absolute pressure.
Arik Subhana, N. Støa-Aanensen, Frank Mauseht   +2 more
semanticscholar   +1 more source

Surface Flashover Characteristics of Spacer in C4F7N-CO2 Mixtures Under AC Voltage

2018 IEEE International Conference on Plasma Science (ICOPS), 2018
Sulfur hexafluoride is a dominated insulating gas in electric system due to its remarkable dielectric insulating properties and arc-quenching capability. However, as a greenhouse gas, the concentration of SF6 in atmosphere increase 50% during the last decade1, numerous studies have been taken to find alternatives of SF6.
Zhichuang Li, Saikang Shen, Yishu Liu, Yanan Wang, Jiaqi Yan, Le Cheng, Weidong Ding   +6 more
openaire   +1 more source

Electrical charge decay on dielectric surface in nitrogen/C4F7N mixtures

Plasma Sources Science & Technology
The decay of electrical charge on a dielectric surface in nitrogen/C4F7N (Novec 4710, C4) mixtures is investigated using measurement of electric field via in-situ electric field-induced second harmonic (EFISH) technique.
D. Prokop, M. Mrkvickova, J. Tungli, Z. Bonaventura, P. Dvorak, S. Kadlec, T. Hoder   +6 more
semanticscholar   +1 more source

Theoretical Investigation of C4F7N–CO2 Mixture Decomposition Characteristics Under Extreme Conditions

Energies
Due to their low greenhouse effect and exceptional insulating properties, C4F7N-CO2 gas mixtures have garnered significant attention. In particular, understanding the decomposition characteristics of C4F7N-CO2 is crucial for their practical use as an eco-
Yuewei Wu, Jian Wu, Xiaolong Wei, Xiaochun Bai, Chen Shen, De Ding, Bin Zheng   +6 more
semanticscholar   +1 more source